Do you want to obtain all the necessary skills of a 3D modeler? Do you want to know how an engineer develop a building model in details? The “3D CAD Application” course, the second course of the new specialization, is coming!
After finishing this course: You will be able to know how to use the SketchUp’s advanced functions by creating 3D building models. You will be able to develop a building as an engineer.
Let’s start the learning journey!

講師

康仕仲

原臺灣大學土木工程學系教授 (Professor)

字幕

Greetings to all. As you may notice, we haven't started drawing the beams. So, in today's class, we will learn a systematic and effective way to draw the beams in SketchUp. Sadly, just like the walls, we cannot copy them as a group. Here again, we we'd need to do a beam for each position. We will use rectangle tool, push and pull tool. Let's get started. Now we will draw the structure beams. We first add a new layer and then a beam. Then we choose this as the active layer. Here the walls are an obstacle for us when we try to draw the beams, so we make the wall layer invisible to avoid problems while drawing. Only the columns are going to be shown because we will use a column as the reference point to draw the beams. We draw the bigger beams first. To know the lines between two columns, we simply use rectangle tool and draw a rectangle between the columns. We can see 386 cm, 50 cm in the measurement box. If you want to note the number precisely, we can click the window in the menu bar then click model info. For units, we click the drop-down menu and in then in precision option, we choose 0.0 cm. Draw the rectangle again and we will see it 386.5 cm, 50 cm this time. The beams we use is 35 centimeters and height is 60 centimeters. So, we input 386.5, 35 and pull it 60 centimeters. The next one is 250, 35 and the next one is 628.5, 35. We will pull both 60 centimeters. We rotate to another direction now to draw the right side beams. The right side beams are slightly different to the front beams because they are aligned to the external parts of the columns. First, we draw the rectangle. Here we can see that the lens is 665 centimeters because we turn 90 degrees. So, we have to input the width then the length. This is straightforward, no need to remember it. We can see the apartment number from the measurement box to tell which to input first. Once we try to try it once, we will get it. So we input 35, 665 then 35, 686.5. Pull both to 60 centimeters. After this, we rotate again to the back of the building. The beams here align to the inner part of the columns. We input 386.5, 35. The next one is 250, 35 and a third beam is 628.5, 35. We pull them 60 centimeters. Rotate again to the left side of the building, the beams here align to the external walls. We start from the external part of the columns and there we input 35, 686.5. The next beam is 665, 35. Then, we push both to 60 centimeters. Now we've finished the bigger beams. Next, to draw the internal horizontal beams from this point of view. According to the floor plan, the beams in the middle should align the front side of the columns. The floor print tells, how we draw the 3D model. Input 386.5, 35 then 250, 35, and the last one is 628.5, 35. Push then to 60 centimeters. Then we draw the internal vertical beams. The beams here align the inner parts of the columns that is, the left side beams align the right part on the columns and the right side beam align the left side of the columns. We now input 686.5, 35 and the other side is also 686.5, 35. Don't forget to align the inner part of the columns. Then input 665, 35 and 665, 35. Finally, we pull them 60 centimeters. We should delete unnecessary surfaces. They will automatically appear when we make a closed polygon and we finish the structural beams. Then to draw the non-structural beams, from the floor plan, we know that there are small beams 406.5 centimeters from this column's surface. So, we need to make guidelines here, we select the tape measure tool to draw the guidelines. Then we draw the guideline, 406.5 centimeters from the column's surface. We use the rectangle tool to draw the small beams which have the width of 30 centimeters. So we input 30, 416.5. Then 30, 250. Now we can delete unnecessary face. Next, to input 30, 658.5. Now we pull each small beams to 60 centimeters. Here are also some small vertical beams. These small beams are 381.5 centimeters away from the left face of the right side column. The same procedure is followed here. So, we also draw the guidelines. The guideline position represents where the left side of the small beam should be drawn. So, we draw the rectangle from this guide line to the right side. We input 406.5, 30 and then 265, 30 to finish these small vertical beams, we put them 60 centimeters high. Next to draw, the internal horizontal small beams that are near the front part of the building. The distance between the small beams and these columns face is 180 centimeters. Here, we also draw the guide line first. Then we use rectangle tool to draw the beams. First input 30, 416.5 then 30, 250. Then we delete the unnecessary faces. Then we input 30, 658.5. For the last beam and we will pull them to 60 centimeters. Finally, we draw the small beams in this area. From the full plan, we know that the distance between the beams and it's columns is 241.5 centimetre. So, we use a tape measure tool to input 241.5. Then we use rectangle tool and input 30, 455 then 30, 180 and pull it for 60 centimeters. After doing this, we finish drawing all the beams. Same as before we group the beams. But before that, we first delete the guide lines. Select edit in the menu bar and choose, delete guides. this function can delete all the guidelines at once. Next, we make the other layer invisible. Then we select all the beams, right click and select make group and make other layer visible again. Today we've finished the beams of our structures. We learn that there are beams responsible to hold the structure of the building and there are other beams that are not. Both of them are important and are really necessary being drawn. We should remember that, using a systematic procedure to draw help us avoid mistakes. We will keep drawing in the next class. Let's stop for now. Goodbye.